Illinois Statute of Limitations on Debt Collection Lawsuits

This article is part of Illinois consumer protection laws and rights, StatuteWorks’s guide to consumer rights in the state. It covers how long a collector has to file suit on an old debt, when the limitations clock starts, what resets it, and how the deadline works as a defense if a collector takes you to court. For the full list of Illinois limitation periods organized by debt type, see the Illinois statute of limitations on debt by type.

How long a collector has to sue in Illinois

Illinois sets the deadline to file a lawsuit by the kind of debt, not by who is collecting it. Three categories cover most consumer debt, and the periods below are current as of 2026:

• Written contracts, promissory notes, and written leases carry a 10-year deadline under 735 ILCS 5/13-206.
• Oral (unwritten) contracts, open accounts, and civil actions not otherwise provided for carry a 5-year deadline under 735 ILCS 5/13-205.
• Contracts for the sale of goods under the Uniform Commercial Code carry a 4-year deadline under 810 ILCS 5/2-725.

Credit card debt sits in a gray area. Illinois courts have applied the 10-year written-contract period under 735 ILCS 5/13-206 when the collector produces a signed cardholder agreement, and the 5-year unwritten period when it cannot. Which period governs a particular account has been litigated repeatedly, and the answer turns on the documents the collector can produce. The companion article on the Illinois statute of limitations on debt by type breaks the categories down in more detail.

The limitation period sets how long a collector has to file a lawsuit. It is separate from how long a debt stays on a credit report, which federal credit-reporting law controls.

When the clock starts and what restarts it

For most consumer debt, the limitations clock starts when the cause of action accrues, usually the date of default, which is often the first missed payment that is never cured. For a promissory note payable on a definite date, 735 ILCS 5/13-206 fixes accrual on the due date or the date the note is accelerated.

Two things can restart the clock. Under 735 ILCS 5/13-206, any payment or a new written promise to pay on a written debt gives the collector a fresh 10 years measured from that payment or promise. A partial payment on other kinds of debt can have a similar effect under Illinois common law. The federal Consumer Financial Protection Bureau warns that making a payment, or even acknowledging that a debt is yours, can restart the time period on an old account.

What “time-barred” means for you

When the deadline passes, the debt becomes time-barred. The obligation does not disappear, and the collector can keep contacting the debtor to ask for payment. What changes is the courtroom: an Illinois court can dismiss a lawsuit filed after the deadline once the defense is raised.

A collector’s conduct around time-barred debt is also regulated. According to the Consumer Financial Protection Bureau, suing or threatening to sue on a debt the collector knows is past the statute of limitations can violate the federal Fair Debt Collection Practices Act. A collector must also be accurate about the status of a debt when it contacts a consumer.

Raising the statute of limitations as a defense

The statute of limitations is an affirmative defense. An Illinois court does not apply it on its own; the person being sued must raise it, normally in the written answer to the complaint. A defense that is never raised is generally waived, and the court can enter judgment even on a debt that is past its deadline.

1. Read the summons and note the response deadline

   The summons states how long there is to respond and which court is involved. The deadline depends on the type of case, and missing it can lead to a default judgment against the person sued.

2. Confirm the date of default

   Identify the last payment or the date the account first went into default. Compare that date against the limitation period for the type of debt, 10 years for a written contract under 735 ILCS 5/13-206 or 5 years for an unwritten one under 735 ILCS 5/13-205.

3. Raise the defense in the answer

   State in the written answer that the claim is barred by the statute of limitations, and cite the applicable section. Filing an appearance and answer on time is what preserves the defense.

4. Bring records to the hearing

   Account statements and proof of the last payment date support the defense. The party asserting that the debt is time-barred benefits from documenting when default occurred.

If a collector already holds a judgment, the statute of limitations no longer bars collection, and the collector can enforce the judgment through tools such as wage garnishment in Illinois.

Debt from another state and where to get help

Illinois has a borrowing statute. Under 735 ILCS 5/13-210, if a debt arose in another state or country and can no longer be sued on there because that place’s deadline has passed, it cannot be sued on in Illinois either. This matters for debts that follow a consumer across state lines.

A consumer who believes a collector is suing on time-barred debt, misrepresenting what is owed, or otherwise breaking the rules can file a complaint with the Illinois Attorney General. That office handles finance and credit consumer issues, including complaints against lenders and collectors.